Mitsubishi Electric 800 Series, Инструкция по эксплуатации, Страница: 397 / 727

(T) Multi-Function Input Terminal Parameters
396
PARAMETERS
??????? Parameters referred to
Pr.22 Stall prevention operation level page 332
Pr.125 Terminal 2 frequency setting gain frequency, Pr.126 Terminal 4 frequency setting gain frequency page 402
Pr.252, Pr.253 override bias/gain page 398
Pr.561 PTC thermistor protection level page 317
Pr.858 Terminal 4 function assignment, Pr.868 Terminal 1 function assignment page 397
 To run with an analog input current
• For constant pressure or temperature control with fans, pumps, or other
devices, automatic operation is available by setting the regulator output signal
4 to 20 mADC to between terminals 4 and 5.
• To use the terminal 4, the AU signal needs to be turned ON.
• Setting "6, 7, 16, or 17" in Pr.73 and turning the voltage/current input switches
ON sets terminal 2 to the current input specification. Concerning the settings,
the AU signal does not need to be turned ON.
Compensation input characteristics
when STF is ON
 To perform forward/reverse rotation with the
analog input (polarity reversible operation)
• Setting Pr.73 to a value of "10 to 17" enables the polarity reversible operation.
• Setting ±input (0 to ±5 V or 0 to ±10 V) to the terminal 1 allows the operation of
forward/reverse rotation by the polarity.
STF
Inverter
Forward
rotation
Frequency
setting
SD
4
5
AU
Connection diagram using
terminal 4 (4 to 20 mADC)
4 to 20 mADC
Current
input
equipment
Voltage/current
input switch
2 4
STF
Inverter
Forward
rotation
SD
2
5
Connection diagram using
terminal 2 (4 to 20 mADC)
Frequency
setting
4 to 20 mADC
Current
input
equipment
Voltage/current
input switch
2 4
Forward
rotation
Reverse
rotation
Terminal 1 input (V)
+5
(+10)
-5
(-10)
0
60
Set frequency
(Hz)
Reversible
Not reversible